Perform the following steps to try to fix the issue:

• Restart the computer
• Check that the server address and credentials are correct
• Verify that the VPN connection is allowed under local network settings.

Check for updates to your VPN client software and install them if available.

Verify that your Windows updates are current and install any pending Windows updates.

Temporarily disabling the local firewall may help to establish the connection.

Verify that your computer has an internet connection. Try disconnecting from the current network and connecting to a different public/home network to check.